Find the position of difference between two strings

Question

I have two strings of equal length, how can I find all the locations where the strings are different?

For example, \"HELPMEPLZ\" and \"HELPNEPLX\" are different at p

Answer 1

>>> from itertools import izip
>>> s1 = 'HELPMEPLZ'
>>> s2 = 'HELPNEPLX'
>>> [i for i,(a1,a2)  in enumerate(izip(s1,s2)) if a1!=a2]
[4, 8]